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When the temperature drops, a lot of homes suddenly sound like they are hosting a flock of electronic birds. Those short, sharp chirps from your smoke alarms are not random, and they tend to cluster ...

The fundamental principle of resonant multiple scattering in the photonic-crystal cladding, which underlies light guidance in PCFs, is inevitably accompanied by limitations in the range of wavelengths ...

Abstract: In the massive machine-type communications (mMTC) supported by grant-free access with massive MIMO, the BS faces the urgent task of the joint activity detection and channel estimation (JADCE ...

Abstract: Orthogonal chirp division multiplexing (OCDM) has been proposed as a novel modulation scheme to take advantage of its double-spreading feature in both the time and frequency domains. It ...